which of these is a proper way to change the following sentence to a passive voice "geologists determined that the shine coming from the rocks had a greater frquency than they thought"
A. geologists determined shine coming from the rocks with a greater frquency than they thought
B. the shine coming from the rocks had a greater frequency than geologists thought
C. geologists determined that the shine from the rocks had a greater frquency than they thought
D. the shine coming from the rocks was determined to have a greater frequency than geologists thought.